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H. C. HEATON 1301mm CLEANER Aug. 28, 1928.

Filed June 30, 1924 flwuentoz Jim man Cji'ea 022 attorney/O Patented Aug. 28, 1928.

UNITED STATES PATENT OFFICE.

I HERMAN C. HEATON, OF CHICAGO, ILLINOIS, ASSIGNOR TO DIAMOND POIVER SPECIALTY CORPORATION, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

BOILER CLEANER.

Application filed June 30,

This invention relates to boiler cleaners and among the objects of the invention are to provide an improved apparatus for cleanmg boilers.

In the draw1ngs:

Figure 1 is a longitudinal sectional view the discharge of a cleaning fluid against boiler tubes 2 (or other parts of a boiler). The blower element, such as-the pipe 1, is passed through the boiler wall 3 and exteriorly of said wall enters an approximately elliptical casing 4 within which a pair of gears 5 and 6 are enmeshed, the gear 5 being fast upon said pipe 1. Upon opposite sides of the common center line of said gears, inlet and outlet chambers 7 and 8 are formed within said casing. According to the invention there is delivered a cleaning fluid, as for example steam, to the chamber 7, which fluid actuates the gears 5 and 6, in the direction indicated by the arrows. Rotation of the gears 5 and is secured by virtue of pressure in the chamber 7 exerted against the teeth of the gears. Referring particularly to Figure 2 it will be noted that there are illustrated on gear 5 the teeth 5 and 5". As clearly illustrated, the tooth 5 is in such a position that its outer edge is in proximity to the inner periphery of the end of the elliptical casing 4; and that steam or cleaning fluid is thus prevented from passing around the end of the tooth 5 from the chamber 7 to the chamber 8. Further it will be noted that the upper face of the tooth 5 is exposed to the reduce pressure in the chamber 8, while the lower face of the tooth 5 is exposed to the relatively high pressure in the chamber 7. It will also be apparent that the tooth 5" is so spaced from the inner periphery of the end of the elliptical casing as not to interfere with the pressure in the chamber 7 acting on the lower face of the tooth 5.

The teeth 6' and 6 are similarly positioned so that th pressure in chamber 7 1924. Serial No. 723,220.

acts on the lower face of tooth 6 in the same manner as the pressure acts on the lower face of the tooth 5. It will thus be seen that the unbalanced pressure against the teeth 5 and 6 will tend to rotate the gears in the direction indicated and that steam will be carried from the chamber 7 and delivered at a reduced ressure to charm her 8. After thus using t e fluid to effect rotation of the blower element 1, the invention provides for delivery of said fluid to said element for discharge therefrom.

9 is a supply pipe for the cleaning fluid, said pipe having branches 10 and 11 adjacent the casing 4, the latter branch discharging into the chamber 7 through an orifice 12. The branch 10 is controlled by a valve 13 and is adapted, when said valve is unseated, to deliver a regulable portion of the supplied cleaning fluid direct to the blower element 1 through a stationary nozzle lat passing through the outer wall of the casing 4 and engaging in the outer end portion of the pipe 1. Said nozzle 14 is also. adapted to deliver to the blower element 1 the clean ing fluid exhausting from the chamber 8,

said exhaust fluid being conducted to said.

nozzle as indicated at 15.

Thus, it is seen that the invention provides for initially utilizing fluid under pressure to rotatively drive a blower element and again utilizes said fluid as the cleansing medium discharged by said element. It will also be evident that the cleaning fluid exhausting from the drive means and delivered to the blower element may be augmented to a regulable degree by cleaning fluid delivered to the blower element independently of the drive means therefor.

What I claim as my invention is 1. In a boiler cleaner, the combination with a blower element, of a casing into which said element extends, a pair of enmeshed gears within said casing, one of which has driving engagement with said element, said gears forming with said casing an inlet chamber for an energizing fluid at one side of the common center line of said gears and an outlet chamber for said fluid at the other side of said center line, and means for delivering an energizing fluid to said inlet chamber and for exhausting said fluid from the outlet chamber.

2. The combination with a rotatable blower element of a casing surounding a portion of the said element. the said casing being provided with a high pressure chamber and low pressure chamber, means connecting the high pressure to a source of cleaning fluid under pressure, means connecting the low pressure chamber to the blower element, and means Within said chamber 'for effecting a rotation of the blower element upon the passage of the cleaning fluid from the high pressure chamber to the low pressure chamher, said last mentioned means including a pair of inter-meshing gears, one of Which is secured to the said blower element.

In testimony whereof I aflix my signature.

HERMAN C. HEATON. 

